ADS131A02
- 2 or 4 simultaneous-sampling differential inputs
- Data rates up to 128 kSPS
- High performance:
- Single-channel accuracy: better than 0.1% at 10,000:1 dynamic range
- Effective resolution: 20.6 bits at 8 kSPS
- THD: –100 dB at 50 Hz and 60 Hz
- Integrated negative charge pump allows absolute input voltages below ground
- Flexible analog power-supply operation:
- Using negative charge pump: 3.0 V to 3.45 V
- Unipolar supply: 3.3 V to 5.5 V
- Bipolar supply: ±2.5 V
- Digital supply: 1.65 V to 3.6 V
- Low-drift internal voltage reference: 6 ppm/°C
- ADC self checks
- Cyclic redundancy check (CRC) and hamming code error correction on communications
- Multiple SPI data interface modes:
- Asynchronous interrupt
- Synchronous master and slave
- Package: 32-pin TQFP
- Operating temperature range:
–40°C to +125°C
The ADS131A02 and ADS131A04 devices are two- and four-channel, simultaneous-sampling, 24-bit, delta-sigma (ΔΣ), analog-to-digital converters (ADCs). The wide dynamic range, with scalable data rates up to 128 kSPS, and internal fault monitors make the ADS131A02 or ADS131A04 a good choice when designing for energy monitoring, grid protection, and control applications. The ADC inputs can be independently and directly interfaced to a resistor-divider network, a current transformer, or a Rogowski coil to measure voltage or current. Flexible power-supply options, including an internal negative charge pump, are available to maximize the effective resolution for high dynamic range applications.
Asynchronous and synchronous master and slave interface options are available, providing ADC configuration flexibility when chaining multiple devices in a single system. Several interface checks, ADC startup checks, and data integrity checks can be enabled on the interface to report errors in the ADC and during data transfer.
The complete analog front-end (AFE) solutions are packaged in a 32-pin TQFP package and are specified over the industrial temperature range of –40°C to +125°C.
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Technical documentation
Type | Title | Date | ||
---|---|---|---|---|
* | Data sheet | ADS131A0x 2- or 4-Channel, 24-Bit, 128-kSPS, Simultaneous-Sampling, Delta-Sigma ADC datasheet (Rev. E) | PDF | HTML | 17 Jun 2020 |
Application note | A Basic Guide to Bridge Measurements (Rev. A) | PDF | HTML | 13 Mar 2024 | |
Application note | Digital Filter Types in Delta-Sigma ADCs (Rev. A) | PDF | HTML | 29 Mar 2023 | |
Application note | Communication Methods for Data Integrity Using Delta-Sigma Data Converters (Rev. A) | PDF | HTML | 23 Aug 2021 | |
E-book | Fundamentals of Precision ADC Noise Analysis | 19 Jun 2020 |
Design & development
For additional terms or required resources, click any title below to view the detail page where available.
ADS131A04EVM — ADS131A04 evaluation module
ANALOG-ENGINEER-CALC — PC software analog engineer's calculator
The analog engineer’s calculator is designed to speed up many of the repetitive calculations that analog circuit design engineers use on a regular basis. This PC-based tool provides a graphical interface with a list of various common calculations ranging from setting operational-amplifier (...)
Supported products & hardware
Products
Precision op amps (Vos<1mV)
General-purpose op amps
Audio op amps
Transimpedance amplifiers
High-speed op amps (GBW ≥ 50 MHz)
Power op amps
Video amplifiers
Line drivers
Transconductance amplifiers & laser drivers
Fully differential amplifiers
Precision ADCs
Biosensing AFEs
High-speed ADCs (≥10 MSPS)
Touchscreen controllers
Difference amplifiers
Instrumentation amplifiers
Audio line receivers
Analog current-sense amplifiers
Digital power monitors
Analog current-sense amplifiers with integrated shunt resistor
Digital power monitors with integrated shunt resistor
Die & wafer services
RF receivers
RF transceivers
RF transmitters
ADC-DAC-TO-VREF-SELECT-DESIGN-TOOL — The ADC-TO-VREF-SELECT tool enables the pairing of TI ADCs, DACs, and series voltage references.
Supported products & hardware
Products
Series voltage references
Precision ADCs
Biosensing AFEs
Integrated precision ADCs & DACs
High-speed ADCs (≥10 MSPS)
Precision DACs (≤10 MSPS)
PSPICE-FOR-TI — PSpice® for TI design and simulation tool
TINA-TI — SPICE-based analog simulation program
TIDA-00835 — High Accuracy ±0.5% Current and Isolated Voltage Measurement Ref Design Using 24-Bit Delta-Sigma ADC
Package | Pins | CAD symbols, footprints & 3D models |
---|---|---|
TQFP (PBS) | 32 | Ultra Librarian |
Ordering & quality
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- Ongoing reliability monitoring
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